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2026-07-05 - 10:22
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Sun Jul 05, 2026 01:01:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2919599199103,89cyclictest4407-21CPU15
2919599199103,89cyclictest4407-21CPU15
2919699195183,10cyclictest0-21swapper/2321:00:1516
2919699195183,10cyclictest0-21swapper/2321:00:1516
2917599192173,8cyclictest0-21swapper/521:37:0335
2917599192173,8cyclictest0-21swapper/521:37:0235
2918399187151,27cyclictest0-21swapper/1122:13:113
2918399187151,27cyclictest0-21swapper/1122:13:103
2917599183131,13cyclictest0-21swapper/521:41:0935
2917599183131,13cyclictest0-21swapper/521:41:0935
2921499180161,11cyclictest0-21swapper/3800:37:1932
2921499180161,11cyclictest0-21swapper/3800:37:1932
2919699178131,27cyclictest0-21swapper/2321:41:1016
2919699178131,27cyclictest0-21swapper/2321:41:1016
2918199178124,24cyclictest0-21swapper/922:47:1639
2918199178124,24cyclictest0-21swapper/922:47:1639
2918199178124,24cyclictest0-21swapper/922:47:1639
2917399178172,2cyclictest0-21swapper/323:50:3623
2917399178172,2cyclictest0-21swapper/323:50:3623
2920799177107,60cyclictest3543-21CPU25
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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